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Posted to mapreduce-dev@hadoop.apache.org by "Siddharth Seth (Created) (JIRA)" <ji...@apache.org> on 2012/01/24 02:55:39 UTC

[jira] [Created] (MAPREDUCE-3713) Incorrect headroom reported to jobs

Incorrect headroom reported to jobs
-----------------------------------

                 Key: MAPREDUCE-3713
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3713
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2, resourcemanager
    Affects Versions: 0.23.0
            Reporter: Siddharth Seth
            Priority: Blocker


With multiple jobs submitted per user, and multiple users submitting jobs - the headroom reported to the AppMasters is incorrect (very high).
Leads to a deadlock - reduces started, map tasks not complete... and reduces are not preempted by the AM due to the incorrect headroom.

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